<template>
  <div>
    <h3>AddItem组件</h3>
    <p>已知库存数: {{ $store.state.num }}</p>
    <button @click="add">库存+1</button>
    <button @click="addfn">库存+5,延迟两秒</button>
  </div>
</template>

<script>
export default {
  methods: {
    // 同步
    add() {
      this.$store.commit("addNum");
    },
    // 异步
    addfn() {
      this.$store.dispatch("asyncAddNum", 5);
    },
  },
};
</script>